US7145959B2 - Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations - Google Patents
Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations Download PDFInfo
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- US7145959B2 US7145959B2 US10/131,612 US13161202A US7145959B2 US 7145959 B2 US7145959 B2 US 7145959B2 US 13161202 A US13161202 A US 13161202A US 7145959 B2 US7145959 B2 US 7145959B2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0837—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using pre-detection combining
- H04B7/0842—Weighted combining
- H04B7/0848—Joint weighting
- H04B7/0851—Joint weighting using training sequences or error signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
Abstract
Description
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US10/131,612 US7145959B2 (en) | 2001-04-25 | 2002-04-25 | Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations |
Applications Claiming Priority (2)
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US28604701P | 2001-04-25 | 2001-04-25 | |
US10/131,612 US7145959B2 (en) | 2001-04-25 | 2002-04-25 | Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations |
Publications (2)
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US20020172308A1 US20020172308A1 (en) | 2002-11-21 |
US7145959B2 true US7145959B2 (en) | 2006-12-05 |
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US10/131,612 Expired - Fee Related US7145959B2 (en) | 2001-04-25 | 2002-04-25 | Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations |
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US20060018287A1 (en) * | 2004-07-20 | 2006-01-26 | Walton Jay R | Adaptive pilot insertion for a MIMO-OFDM system |
US20060198477A1 (en) * | 2005-03-02 | 2006-09-07 | Moorti R T | Carrier detection for multiple receiver systems |
US20080240314A1 (en) * | 2007-03-27 | 2008-10-02 | Qualcomm Incorporated | Channel estimation with effective co-channel interference suppression |
WO2008129476A2 (en) | 2007-04-24 | 2008-10-30 | Koninklijke Philips Electronics N.V. | Pilot allocation in single frequency network |
US20110064115A1 (en) * | 2009-08-21 | 2011-03-17 | Hua Xu | Transmission of information in a wireless communication system |
WO2011057211A1 (en) * | 2009-11-06 | 2011-05-12 | Hua Xu | Transmission of information in a wireless communication system |
US8045512B2 (en) | 2005-10-27 | 2011-10-25 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US8098569B2 (en) | 2000-09-13 | 2012-01-17 | Qualcomm Incorporated | Signaling method in an OFDM multiple access system |
US8446892B2 (en) | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US8462859B2 (en) | 2005-06-01 | 2013-06-11 | Qualcomm Incorporated | Sphere decoding apparatus |
US8477684B2 (en) | 2005-10-27 | 2013-07-02 | Qualcomm Incorporated | Acknowledgement of control messages in a wireless communication system |
US8565194B2 (en) | 2005-10-27 | 2013-10-22 | Qualcomm Incorporated | Puncturing signaling channel for a wireless communication system |
US8582509B2 (en) | 2005-10-27 | 2013-11-12 | Qualcomm Incorporated | Scalable frequency band operation in wireless communication systems |
US8582548B2 (en) | 2005-11-18 | 2013-11-12 | Qualcomm Incorporated | Frequency division multiple access schemes for wireless communication |
US8599945B2 (en) | 2005-06-16 | 2013-12-03 | Qualcomm Incorporated | Robust rank prediction for a MIMO system |
US8611284B2 (en) | 2005-05-31 | 2013-12-17 | Qualcomm Incorporated | Use of supplemental assignments to decrement resources |
US8693405B2 (en) | 2005-10-27 | 2014-04-08 | Qualcomm Incorporated | SDMA resource management |
US8787347B2 (en) | 2005-08-24 | 2014-07-22 | Qualcomm Incorporated | Varied transmission time intervals for wireless communication system |
US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
US8885628B2 (en) | 2005-08-08 | 2014-11-11 | Qualcomm Incorporated | Code division multiplexing in a single-carrier frequency division multiple access system |
US8917654B2 (en) | 2005-04-19 | 2014-12-23 | Qualcomm Incorporated | Frequency hopping design for single carrier FDMA systems |
US9130810B2 (en) | 2000-09-13 | 2015-09-08 | Qualcomm Incorporated | OFDM communications methods and apparatus |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
US9136974B2 (en) | 2005-08-30 | 2015-09-15 | Qualcomm Incorporated | Precoding and SDMA support |
US9144060B2 (en) | 2005-10-27 | 2015-09-22 | Qualcomm Incorporated | Resource allocation for shared signaling channels |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US9154211B2 (en) | 2005-03-11 | 2015-10-06 | Qualcomm Incorporated | Systems and methods for beamforming feedback in multi antenna communication systems |
US9172453B2 (en) | 2005-10-27 | 2015-10-27 | Qualcomm Incorporated | Method and apparatus for pre-coding frequency division duplexing system |
US9179319B2 (en) | 2005-06-16 | 2015-11-03 | Qualcomm Incorporated | Adaptive sectorization in cellular systems |
US9184870B2 (en) | 2005-04-01 | 2015-11-10 | Qualcomm Incorporated | Systems and methods for control channel signaling |
US9210651B2 (en) | 2005-10-27 | 2015-12-08 | Qualcomm Incorporated | Method and apparatus for bootstraping information in a communication system |
US9209956B2 (en) | 2005-08-22 | 2015-12-08 | Qualcomm Incorporated | Segment sensitive scheduling |
US9225488B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Shared signaling channel |
US9225416B2 (en) | 2005-10-27 | 2015-12-29 | Qualcomm Incorporated | Varied signaling channels for a reverse link in a wireless communication system |
US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
US9307544B2 (en) | 2005-04-19 | 2016-04-05 | Qualcomm Incorporated | Channel quality reporting for adaptive sectorization |
US9461859B2 (en) | 2005-03-17 | 2016-10-04 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
US9520972B2 (en) | 2005-03-17 | 2016-12-13 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
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US9660776B2 (en) | 2005-08-22 | 2017-05-23 | Qualcomm Incorporated | Method and apparatus for providing antenna diversity in a wireless communication system |
US9814003B2 (en) | 2009-11-06 | 2017-11-07 | Blackberry Limited | Transmission of information in a wireless communication system |
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US8547820B2 (en) | 2004-07-20 | 2013-10-01 | Qualcomm Incorporated | Adaptive pilot insertion for a MIMO-OFDM system |
US20060018287A1 (en) * | 2004-07-20 | 2006-01-26 | Walton Jay R | Adaptive pilot insertion for a MIMO-OFDM system |
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US10237892B2 (en) | 2004-07-21 | 2019-03-19 | Qualcomm Incorporated | Efficient signaling over access channel |
US10517114B2 (en) | 2004-07-21 | 2019-12-24 | Qualcomm Incorporated | Efficient signaling over access channel |
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US9148256B2 (en) | 2004-07-21 | 2015-09-29 | Qualcomm Incorporated | Performance based rank prediction for MIMO design |
US9137822B2 (en) | 2004-07-21 | 2015-09-15 | Qualcomm Incorporated | Efficient signaling over access channel |
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US9246560B2 (en) | 2005-03-10 | 2016-01-26 | Qualcomm Incorporated | Systems and methods for beamforming and rate control in a multi-input multi-output communication systems |
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US8547951B2 (en) | 2005-03-16 | 2013-10-01 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US8446892B2 (en) | 2005-03-16 | 2013-05-21 | Qualcomm Incorporated | Channel structures for a quasi-orthogonal multiple-access communication system |
US9143305B2 (en) | 2005-03-17 | 2015-09-22 | Qualcomm Incorporated | Pilot signal transmission for an orthogonal frequency division wireless communication system |
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US8879511B2 (en) | 2005-10-27 | 2014-11-04 | Qualcomm Incorporated | Assignment acknowledgement for a wireless communication system |
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CN102771058A (en) * | 2009-11-06 | 2012-11-07 | 捷讯研究有限公司 | Transmission of information in a wireless communication system |
WO2011057211A1 (en) * | 2009-11-06 | 2011-05-12 | Hua Xu | Transmission of information in a wireless communication system |
US9814003B2 (en) | 2009-11-06 | 2017-11-07 | Blackberry Limited | Transmission of information in a wireless communication system |
CN102771058B (en) * | 2009-11-06 | 2016-12-14 | 黑莓有限公司 | Information transmission in wireless communication system |
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